How do you deal with whirling disease? You can't get rid of it, but you can attempt to stop the spread. The reality with whirling disease is that it's likely in a lot more places than we've looked.
Whirling disease requires a very specific set of conditions to express itself. Amazingly enough, those conditions are high water temperature, poor water quality, and low water oxygen. In theory, then, if we clean up our water, whether whirling disease is there or not, it should not be expressed. Keeping our watersheds healthy is important.